Advertisements
Advertisements
Question
Add a note on pollination mechanism in Salvia.
Advertisements
Solution
Pollination mechanism in Salvia:
i. In Salvia, flower is bisexual and protandrous, i.e. anthers mature earlier than stigma.
ii. The two stamens of flower have long bifurcated connective.
iii. Upper branch of connective bears fertile anther lobe, while lower has sterile anther lobe.
iv. When an insect enters the flower, it pushes the lower sterile lobes. As a result, the upper fertile anther lobe bends down.
v. The fertile anther lobe comes in contact with back side of insect body and pollen grains are dusted there.
vi. When the same insect visits another flower with matured gynoecium, the pollen grains are picked up
by the receptive stigma.
vii. This mechanism is called lever-mechanism or turn-pipe mechanism.
APPEARS IN
RELATED QUESTIONS
Find the odd-one out, giving reason:
Ovary, style, pollen grain, stigma
Can a unisexual flower be self pollinated?
Select and write the most appropriate answer from the given alternatives for the following subquestion:
A versatile anther is an adaptation for _______ type of pollination.
Type of interaction where an individual sacrifices its own welfare (life) for the benefit of another animal of its own species is ______.
What are the adaptations which are required in cross-pollinated
The question has four options. Choose the correct answer:
Pollination by insect is known as
Feathery stigma occurs in ______.
The flower which does not open at all are called ______.
Advantage of cleistogamy is:
Choose the correct statement from the following:
